Power-transmitting mechanism.



W. L. MANN.

POWER TRANSMITTING MEGHANISM.

AFPLIGATION4 FILED 1320.18, 1910.

Patented Nov. 28, 1911.

lsmlgahs PATENT torsion ,e WILLtAM-L., MANN, ori-sfr. aosnrnfmssonm.

To all whom it mary concern:

u YBe it known that I, WILLmM LfMANn, a citizen ot the United States,residing at St.\ Joseph," 1n the county .of Buchanan and State ofMissouri, have invented certain newA anduseful Improvements in Power-Transmitting Mechanisms, of which the following is* al speciiication,reference being had therein to the accompanying dra/Wing.

My invention relates to improvements in poiver transmitting mechanismsof the yieldable speed type; the objects of which are first, to providea simple, substantial and durable mechanism of this class, .which ispositive in its action and vwhich will transmit power Without suddenstrain and concussion ofthe parts involved; thereby obviatng slippage ofthe parts, the use ot adhev sives and the other disadvantagesexperienced '1n the use of friction clutches; second,

to so construct the parts of a power transmitting mechanism that theyshall be dust proof, and self lubricating throughout.

I attain these objects by the mechanism illustrated in the accompanyingdrawing, in

Which:-

Figure 1 1s a horizontal section et the ,.niechanisnn on the line X Xseen in Fig. 2,

looking downward. Fig. 2 is a side elevation. Fig, 3 is a transversesection on the line Z Z'seen in Fig. 2, looking toward the lett.

Referring to Fig. 1, povver sha'tt 8 is rotatably mounted in gear case10, and is rotated by an;v source of power, not shown, such as anexplosion engine. electric motor and the like. Said sha/tt and gear casemay be of any different forms that are suitable for connection with. theherein described mechanism, and are therefore neither fully shown nordescribed. The outer end of shaft 8 is connected with the following de-`scribed yieldable power transmitting mechanism. Shaft S connected withWorm shaft 13 by universal joint 14,-, covered by casing 15. hinged toplate 9 by bolts 15. Said casing together with socket 15 (formed withplate 9) provides a dust proof casing for universal. joint 14. Plate 9is secured to gear caselO.

lith casing 15 is formed the inner head 16 ot worm casing 16, securedthereto and provided with outer head 1(31 secured thereon. The inner endportion oi vehicle shaft 17 is rotatably mounted in head 1G, while theouter end portion of said shaft is adapt- PoWnn-TBANSMITTING:MECHANIsa/r. i

Specification of Letters Patent. Pate-1113901 NOV, 28, 1911, Applicationfiled December 16. 1910.- Scrial No. 597,735. i i i ed to drive avehicle' in any ofthe usual Well known Ways, and since said shaft por-13 having spirally arrangedtln'eads 13 formed thereon. The outer Vend of,said ivorm is rotatably mounted on the reduced inner end portion ofshaft 17. The outer by key 1T. Said head yis secured on the outer end ofcylinder 18, provided with inner cylinder head 18, rotatably mounted onshaft 13. Said cylinder has slots 1Sa formed longitudinally through thesides thereof, through which extend the drive bosses 19', formed ondrive block 19. Said drive block has internal threads 19., adapted tofit threads 13". Said threads are made at any desired angle ofinclination, from that ot one ordinary scren1 thread, to that of aplurality of threads of any desired number arranged in spirals aroundsaid Worm.

In cylinder 18 and between head 18 and said drive block, is the spiralanti-concussion spring Q0, while between said block and cylinder head18" is the reverse Inovement anti-concussion spring 21. Said springs areadapted to be compressed against their respective cylinder heads bydrive block 19, moved against spring 9.0 by for fard rotatipupet 'worm13 and against spring 21 by reverse, or backward rotation ot' said Worm.Said springs are adapted to elastic-.ally resist the movement of block19.

Having fully described my invention, what l claim as ne f and originaland desire to secure by Letters Patent isz- 1, A dust proof casing; aninner worm casing head; 'a Worm casing vadapted to hold oil therein saidWorm easing having its inner end secured to said inner Worm casing hadand its outer end provided with an outer worm c asinghead securedthereon; a Worm shaft in said worm casing said Worm l shatt having oneend portion thereof rotal tabl;T mounted in said inner Worm casing headand extended therefrom into said dust proof casing said extended endportion being adaptedto have power applied thereto; a spil-ally threadedWorm formed on the other end portion oi. said Worm shaft; a vehicleshafthaving an end portion thereof rotatably mounted in said outer wormcasing head and a reduced end portion on tion and vehicle tormno part ofmy inven-` tion,l they are neither shown nor described.`

Formed with wormshaft 13 is the4 worm cylinder head 18 is y.secured (onshaft 17` which theend of said worm is rotatably mounted; a cylinder insaid worm casing said Cylinder having a plurality of slots formedlongitudinally through the sides thereof said cylinder being providedwith an outer cylinder head secured on said vehicle shaft and withan-inner cylinder head rotatably mounted on said Worm shaft; a driveblock on said worm said block being provided with internal threads inengagement with the spiral threads of said worm for moving said blockthe latter being further provided with drive bosses formed' thereon saidbosses being slidable in the slots in said cylinder; a spring in saidcylinderbetween said outer cylinder head and said block; another springin said Cylinder between said inner cylinder head and said block androtating means for rotating said Worm shaft.

2. A vehicle shaft having a reducedv end portion formed. on one endthereof; a spirally threaded worm having one end thereof rotatablymounted on -said reduced end portion of saidV vehicleshaft and a 'wormshaft formed on the other end -port-ion thereof and extended therefrom;power connecting -means on the 4extended end of said worm shaft forapplying power thereto a driye said .one end of said vehicle shaft arerotatably mounted.

In testimony whereof I aiiix my signature in the presence of twowitnesses.

' WILLIAM L. MANN. Witnesses: I

LUKE E. Hm'roN,` JOHN JJHIN'roN.

